本文是关于采用三个TTL D触发器和六个译码器来组成扭形计数器的设计。
This paper is concerned with three TTL D flip-flops and six Decoders which are buith by Ring counter design.
本文介绍了数字电路系统的逻辑设计过程，并且着重阐明异步计数器和译码器的功能，数字钟是这方面应用的一个实例。
This paper introduces the process of logic design of digital circuits, and mainly explains the function of asynchronous counter and decoder. The digital clock is an example of this application.
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